The present invention discloses processes for producing a thiol compound or a sulfide compound from an olefin compound. Diphenylamine or a phenol compound can be used to increase the rate of conversion of the olefin compound to the thiol compound or the sulfide compound.

The present invention discloses processes for producing a thiol compound or a sulfide compound from an olefin compound. Diphenylamine or a phenol compound can be used to increase the rate of conversion of the olefin compound to the thiol compound or the sulfide compound.

The present invention discloses processes for producing a thiol compound or a sulfide compound from an olefin compound. Diphenylamine or a phenol compound can be used to increase the rate of conversion of the olefin compound to the thiol compound or the sulfide compound.

Disclosed are sulfide-based compounds which are a product of a Michael addition reaction between a sulfur-containing donor group and an unsaturated hydrocarbon moiety. The sulfide-based compounds may be used in compositions and methods for inhibiting corrosion.

A composition comprising polysulfides, wherein at least about 50 wt. % of the polysulfides are branched C.sub.20 to C.sub.60 polysulfides represented by general formula R.sup.15S.sup.1[S].sub.nS.sup.2R.sup.16 wherein R.sup.15 and R.sup.16 are each independently a branched C.sub.10 to C.sub.30 alkyl group and wherein n is an integer from 1 to 10. A process of producing a polysulfides crude product comprising one or more branched C.sub.20 to C.sub.60 polysulfides comprising: (A) reacting a feedstock comprising one or more branched C.sub.10 to C.sub.30 mercaptans and sulfur in the presence of a catalyst and (B) collecting the polysulfides crude product.

A composition comprising polysulfides, wherein at least about 50 wt. % of the polysulfides are branched C.sub.20 to C.sub.60 polysulfides represented by general formula R.sup.15S.sup.1[S].sub.nS.sup.2R.sup.16 wherein R.sup.15 and R.sup.16 are each independently a branched C.sub.10 to C.sub.30 alkyl group and wherein n is an integer from 1 to 10. A process of producing a polysulfides crude product comprising one or more branched C.sub.20 to C.sub.60 polysulfides comprising: (A) reacting a feedstock comprising one or more branched C.sub.10 to C.sub.30 mercaptans and sulfur in the presence of a catalyst and (B) collecting the polysulfides crude product.

A composition comprising polysulfides, wherein at least about 50 wt. % of the polysulfides are branched C.sub.20 to C.sub.60 polysulfides represented by general formula R.sup.15S.sup.1[S].sub.nS.sup.2R.sup.16 wherein R.sup.15 and R.sup.16 are each independently a branched C.sub.10 to C.sub.30 alkyl group and wherein n is an integer from 1 to 10. A process of producing a polysulfides crude product comprising one or more branched C.sub.20 to C.sub.60 polysulfides comprising: (A) reacting a feedstock comprising one or more branched C.sub.10 to C.sub.30 mercaptans and sulfur in the presence of a catalyst and (B) collecting the polysulfides crude product.

A method for producing 3-mercaptopropionic acid and methods using same for producing a carbonic acid ester compound having a mercapto group and a thiourethane-based optical material. The present invention improves a process during the production of 3-mercaptopropionic acid, significantly increases yield, and reduces the temperature and time during vacuum distillation, thereby preventing the destruction of a product and significantly increasing productivity. The present invention allows high-purity 3-mercaptopropionic acid having an excellent color to be finally yielded; accordingly, by using same, a high-purity carbonic acid ester compound having an excellent color and a mercapto group can be inexpensively obtained. A thiourethane-based polymeric composition and a thiourethane-based optical material obtained by polymerizing same can likewise be inexpensively obtained by using said carbonic acid ester compound. Such carbonic acid ester compound can be used for the production of inexpensive thiourethane optical lenses; consequently, inexpensive optical lenses having an excellent color can be obtained.

A method for producing 3-mercaptopropionic acid and methods using same for producing a carbonic acid ester compound having a mercapto group and a thiourethane-based optical material. The present invention improves a process during the production of 3-mercaptopropionic acid, significantly increases yield, and reduces the temperature and time during vacuum distillation, thereby preventing the destruction of a product and significantly increasing productivity. The present invention allows high-purity 3-mercaptopropionic acid having an excellent color to be finally yielded; accordingly, by using same, a high-purity carbonic acid ester compound having an excellent color and a mercapto group can be inexpensively obtained. A thiourethane-based polymeric composition and a thiourethane-based optical material obtained by polymerizing same can likewise be inexpensively obtained by using said carbonic acid ester compound. Such carbonic acid ester compound can be used for the production of inexpensive thiourethane optical lenses; consequently, inexpensive optical lenses having an excellent color can be obtained.

A method for producing 3-mercaptopropionic acid and methods using same for producing a carbonic acid ester compound having a mercapto group and a thiourethane-based optical material. The present invention improves a process during the production of 3-mercaptopropionic acid, significantly increases yield, and reduces the temperature and time during vacuum distillation, thereby preventing the destruction of a product and significantly increasing productivity. The present invention allows high-purity 3-mercaptopropionic acid having an excellent color to be finally yielded; accordingly, by using same, a high-purity carbonic acid ester compound having an excellent color and a mercapto group can be inexpensively obtained. A thiourethane-based polymeric composition and a thiourethane-based optical material obtained by polymerizing same can likewise be inexpensively obtained by using said carbonic acid ester compound. Such carbonic acid ester compound can be used for the production of inexpensive thiourethane optical lenses; consequently, inexpensive optical lenses having an excellent color can be obtained.